using System;
using System.Collections;
using System.Collections.Generic;
using AibisDream.Framework;
using DG.Tweening;
using UnityEngine;

namespace AibisDream.FixSystem
{
    [RequireComponent(typeof(Collider2D), typeof(Rigidbody2D))]
    public class CoolingBottle : MonoBehaviour, IMoveable
    {
        private const float RotateTime = 0.3f;
        private const float SnapMoveTime = 0.3f;
        private static readonly Vector3 ClockwiseAngle = new(0, 0, 0);
        private static readonly Vector3 ClockWiseScale = new(1, 1, 1);
        private static readonly Vector3 AnticlockwiseAngle = new(0, 0, 90);
        private static readonly Vector3 AnticlockwiseScale = new(1.45f, 1.45f, 1);
        
        public CoolingBottleData data;

        #region 引用
        
        private Sprite _verticalSprite;
        private Sprite _horizontalSprite;

        public BottleSlot curSnapSlot;
        public readonly HashSet<BottleSlot> targetSnapSlotSet = new();

        private Rigidbody2D _rb;
        private SpriteRenderer _renderer;

        #endregion

        private void Awake()
        {
            InitRefs();
        }

        private void InitRefs()
        {
            _rb = GetComponent<Rigidbody2D>();
            _renderer = GetComponent<SpriteRenderer>();
        }

        #region 移动逻辑

        public bool IsBlock { get; set; }

        public void StartMove()
        {
            _rb.isKinematic = false;
            gameObject.layer = LayerMask.NameToLayer("Clinic");
            // 开始移动时就切换成横版
            Rotate(false);
        }

        public void Rotate(bool isVertical)
        {
            StartCoroutine(RotateAsync(isVertical));
        }

        /// <summary>
        /// 旋转瓶子
        /// </summary>
        /// <param name="isVertical">是否竖直</param>
        /// <returns></returns>
        private IEnumerator RotateAsync(bool isVertical)
        {
            var angle = isVertical ? ClockwiseAngle : AnticlockwiseAngle;
            var scale = isVertical ? ClockWiseScale : AnticlockwiseScale;
            // 动画序列
            var sq = DOTween.Sequence();
            Tween rotate = transform.DORotate(angle, RotateTime, RotateMode.FastBeyond360);
            sq.Join(rotate);
            Tween scaleTw = transform.DOScale(scale, RotateTime);
            sq.Join(scaleTw);

            yield return sq.WaitForCompletion();
        }

        public void Move(Vector2 mousePos)
        {
            _rb.MovePosition(mousePos);
        }

        public void StopMove()
        {
            if (TryFindClosestSlot(out var targetSlot))
            {
                // 从原有Slot移出
                curSnapSlot.RemoveBottle();
                // 更新到新的Slot
                curSnapSlot = targetSlot;
                
                curSnapSlot.ChangeSlot(this);
            }

            targetSnapSlotSet.Clear();

            // 吸附到目标位置
            _rb.isKinematic = true;
            gameObject.layer = LayerMask.NameToLayer("Default");
            curSnapSlot.InsertSlot(this);
            transform.DOMove(curSnapSlot.transform.position, SnapMoveTime);
            
            // TODO 停止描边
        }

        public bool TryFindClosestSlot(out BottleSlot targetSlot)
        {
            // 没有目标Slot，返回
            if (targetSnapSlotSet.Count == 0)
            {
                targetSlot = null;
                return false;
            }
            
            // 寻找最近的Slot
            var shortestDistance = float.MaxValue;
            BottleSlot closestSlot = null;
            foreach (var slot in targetSnapSlotSet)
            {
                var distance = Vector3.Distance(slot.transform.position, transform.position);
                if (distance < shortestDistance)
                {
                    shortestDistance = distance;
                    closestSlot = slot;
                }
            }

            targetSlot = closestSlot;
            return true;
        }

        #endregion

        public void Load(CoolingBottleData targetData)
        {
            data = targetData;
            _verticalSprite = ResourceKit.LoadSpriteFromPsd($"Art/Fix/Cooling/冷却系统/{data.verticalSprite}");
            _renderer.sprite = _verticalSprite;
        }
    }

    [Serializable]
    public struct CoolingBottleData
    {
        public string name;
        public string description;
        public string verticalSprite;
        public string horizontalSprite;
    }
}